Sure thing! We've got 100 and we're gonna multiply it by 499. That's the same as adding 100 to itself 499 times.
Step 1: 0 + 100 = 100
Step 2: 100 + 100 = 200
Step 3: 200 + 100 = 300
Step 4: 300 + 100 = 400
Step 5: 400 + 100 = 500
Step 6: 500 + 100 = 600
Step 7: 600 + 100 = 700
Step 8: 700 + 100 = 800
Step 9: 800 + 100 = 900
Step 10: 900 + 100 = 1000
Step 11: 1000 + 100 = 1100
Step 12: 1100 + 100 = 1200
Step 13: 1200 + 100 = 1300
Step 14: 1300 + 100 = 1400
Step 15: 1400 + 100 = 1500
Step 16: 1500 + 100 = 1600
Step 17: 1600 + 100 = 1700
Step 18: 1700 + 100 = 1800
Step 19: 1800 + 100 = 1900
Step 20: 1900 + 100 = 2000
Step 21: 2000 + 100 = 2100
Step 22: 2100 + 100 = 2200
Step 23: 2200 + 100 = 2300
Step 24: 2300 + 100 = 2400
Step 25: 2400 + 100 = 2500
Step 26: 2500 + 100 = 2600
Step 27: 2600 + 100 = 2700
Step 28: 2700 + 100 = 2800
Step 29: 2800 + 100 = 2900
Step 30: 2900 + 100 = 3000
Step 31: 3000 + 100 = 3100
Step 32: 3100 + 100 = 3200
Step 33: 3200 + 100 = 3300
Step 34: 3300 + 100 = 3400
Step 35: 3400 + 100 = 3500
Step 36: 3500 + 100 = 3600
Step 37: 3600 + 100 = 3700
Step 38: 3700 + 100 = 3800
Step 39: 3800 + 100 = 3900
Step 40: 3900 + 100 = 4000
Step 41: 4000 + 100 = 4100
Step 42: 4100 + 100 = 4200
Step 43: 4200 + 100 = 4300
Step 44: 4300 + 100 = 4400
Step 45: 4400 + 100 = 4500
Step 46: 4500 + 100 = 4600
Step 47: 4600 + 100 = 4700
Step 48: 4700 + 100 = 4800
Step 49: 4800 + 100 = 4900
Step 50: 4900 + 100 = 5000
Step 51: 5000 + 100 = 5100
Step 52: 5100 + 100 = 5200
Step 53: 5200 + 100 = 5300
Step 54: 5300 + 100 = 5400
Step 55: 5400 + 100 = 5500
Step 56: 5500 + 100 = 5600
Step 57: 5600 + 100 = 5700
Step 58: 5700 + 100 = 5800
Step 59: 5800 + 100 = 5900
Step 60: 5900 + 100 = 6000
Step 61: 6000 + 100 = 6100
Step 62: 6100 + 100 = 6200
Step 63: 6200 + 100 = 6300
Step 64: 6300 + 100 = 6400
Step 65: 6400 + 100 = 6500
Step 66: 6500 + 100 = 6600
Step 67: 6600 + 100 = 6700
Step 68: 6700 + 100 = 6800
Step 69: 6800 + 100 = 6900
Step 70: 6900 + 100 = 7000
Step 71: 7000 + 100 = 7100
Step 72: 7100 + 100 = 7200
Step 73: 7200 + 100 = 7300
Step 74: 7300 + 100 = 7400
Step 75: 7400 + 100 = 7500
Step 76: 7500 + 100 = 7600
Step 77: 7600 + 100 = 7700
Step 78: 7700 + 100 = 7800
Step 79: 7800 + 100 = 7900
Step 80: 7900 + 100 = 8000
Step 81: 8000 + 100 = 8100
Step 82: 8100 + 100 = 8200
Step 83: 8200 + 100 = 8300
Step 84: 8300 + 100 = 8400
Step 85: 8400 + 100 = 8500
Step 86: 8500 + 100 = 8600
Step 87: 8600 + 100 = 8700
Step 88: 8700 + 100 = 8800
Step 89: 8800 + 100 = 8900
Step 90: 8900 + 100 = 9000
Step 91: 9000 + 100 = 9100
Step 92: 9100 + 100 = 9200
Step 93: 9200 + 100 = 9300
Step 94: 9300 + 100 = 9400
Step 95: 9400 + 100 = 9500
Step 96: 9500 + 100 = 9600
Step 97: 9600 + 100 = 9700
Step 98: 9700 + 100 = 9800
Step 99: 9800 + 100 = 9900
Step 100: 9900 + 100 = 10000
Step 101: 10000 + 100 = 10100
Step 102: 10100 + 100 = 10200
Step 103: 10200 + 100 = 10300
Step 104: 10300 + 100 = 10400
Step 105: 10400 + 100 = 10500
Step 106: 10500 + 100 = 10600
Step 107: 10600 + 100 = 10700
Step 108: 10700 + 100 = 10800
Step 109: 10800 + 100 = 10900
Step 110: 10900 + 100 = 11000
Step 111: 11000 + 100 = 11100
Step 112: 11100 + 100 = 11200
Step 113: 11200 + 100 = 11300
Step 114: 11300 + 100 = 11400
Step 115: 11400 + 100 = 11500
Step 116: 11500 + 100 = 11600
Step 117: 11600 + 100 = 11700
Step 118: 11700 + 100 = 11800
Step 119: 11800 + 100 = 11900
Step 120: 11900 + 100 = 12000
Step 121: 12000 + 100 = 12100
Step 122: 12100 + 100 = 12200
Step 123: 12200 + 100 = 12300
Step 124: 12300 + 100 = 12400
Step 125: 12400 + 100 = 12500
Step 126: 12500 + 100 = 12600
Step 127: 12600 + 100 = 12700
Step 128: 12700 + 100 = 12800
Step 129: 12800 + 100 = 12900
Step 130: 12900 + 100 = 13000
Step 131: 13000 + 100 = 13100
Step 132: 13100 + 100 = 13200
Step 133: 13200 + 100 = 13300
Step 134: 13300 + 100 = 13400
Step 135: 13400 + 100 = 13500
Step 136: 13500 + 100 = 13600
Step 137: 13600 + 100 = 13700
Step 138: 13700 + 100 = 13800
Step 139: 13800 + 100 = 13900
Step 140: 13900 + 100 = 14000
Step 141: 14000 + 100 = 14100
Step 142: 14100 + 100 = 14200
Step 143: 14200 + 100 = 14300
Step 144: 14300 + 100 = 14400
Step 145: 14400 + 100 = 14500
Step 146: 14500 + 100 = 14600
Step 147: 14600 + 100 = 14700
Step 148: 14700 + 100 = 14800
Step 149: 14800 + 100 = 14900
Step 150: 14900 + 100 = 15000
Step 151: 15000 + 100 = 15100
Step 152: 15100 + 100 = 15200
Step 153: 15200 + 100 = 15300
Step 154: 15300 + 100 = 15400
Step 155: 15400 + 100 = 15500
Step 156: 15500 + 100 = 15600
Step 157: 15600 + 100 = 15700
Step 158: 15700 + 100 = 15800
Step 159: 15800 + 100 = 15900
Step 160: 15900 + 100 = 16000
Step 161: 16000 + 100 = 16100
Step 162: 16100 + 100 = 16200
Step 163: 16200 + 100 = 16300
Step 164: 16300 + 100 = 16400
Step 165: 16400 + 100 = 16500
Step 166: 16500 + 100 = 16600
Step 167: 16600 + 100 = 16700
Step 168: 16700 + 100 = 16800
Step 169: 16800 + 100 = 16900
Step 170: 16900 + 100 = 17000
Step 171: 17000 + 100 = 17100
Step 172: 17100 + 100 = 17200
Step 173: 17200 + 100 = 17300
Step 174: 17300 + 100 = 17400
Step 175: 17400 + 100 = 17500
Step 176: 17500 + 100 = 17600
Step 177: 17600 + 100 = 17700
Step 178: 17700 + 100 = 17800
Step 179: 17800 + 100 = 17900
Step 180: 17900 + 100 = 18000
Step 181: 18000 + 100 = 18100
Step 182: 18100 + 100 = 18200
Step 183: 18200 + 100 = 18300
Step 184: 18300 + 100 = 18400
Step 185: 18400 + 100 = 18500
Step 186: 18500 + 100 = 18600
Step 187: 18600 + 100 = 18700
Step 188: 18700 + 100 = 18800
Step 189: 18800 + 100 = 18900
Step 190: 18900 + 100 = 19000
Step 191: 19000 + 100 = 19100
Step 192: 19100 + 100 = 19200
Step 193: 19200 + 100 = 19300
Step 194: 19300 + 100 = 19400
Step 195: 19400 + 100 = 19500
Step 196: 19500 + 100 = 19600
Step 197: 19600 + 100 = 19700
Step 198: 19700 + 100 = 19800
Step 199: 19800 + 100 = 19900
Step 200: 19900 + 100 = 20000
Step 201: 20000 + 100 = 20100
Step 202: 20100 + 100 = 20200
Step 203: 20200 + 100 = 20300
Step 204: 20300 + 100 = 20400
Step 205: 20400 + 100 = 20500
Step 206: 20500 + 100 = 20600
Step 207: 20600 + 100 = 20700
Step 208: 20700 + 100 = 20800
Step 209: 20800 + 100 = 20900
Step 210: 20900 + 100 = 21000
Step 211: 21000 + 100 = 21100
Step 212: 21100 + 100 = 21200
Step 213: 21200 + 100 = 21300
Step 214: 21300 + 100 = 21400
Step 215: 21400 + 100 = 21500
Step 216: 21500 + 100 = 21600
Step 217: 21600 + 100 = 21700
Step 218: 21700 + 100 = 21800
Step 219: 21800 + 100 = 21900
Step 220: 21900 + 100 = 22000
Step 221: 22000 + 100 = 22100
Step 222: 22100 + 100 = 22200
Step 223: 22200 + 100 = 22300
Step 224: 22300 + 100 = 22400
Step 225: 22400 + 100 = 22500
Step 226: 22500 + 100 = 22600
Step 227: 22600 + 100 = 22700
Step 228: 22700 + 100 = 22800
Step 229: 22800 + 100 = 22900
Step 230: 22900 + 100 = 23000
Step 231: 23000 + 100 = 23100
Step 232: 23100 + 100 = 23200
Step 233: 23200 + 100 = 23300
Step 234: 23300 + 100 = 23400
Step 235: 23400 + 100 = 23500
Step 236: 23500 + 100 = 23600
Step 237: 23600 + 100 = 23700
Step 238: 23700 + 100 = 23800
Step 239: 23800 + 100 = 23900
Step 240: 23900 + 100 = 24000
Step 241: 24000 + 100 = 24100
Step 242: 24100 + 100 = 24200
Step 243: 24200 + 100 = 24300
Step 244: 24300 + 100 = 24400
Step 245: 24400 + 100 = 24500
Step 246: 24500 + 100 = 24600
Step 247: 24600 + 100 = 24700
Step 248: 24700 + 100 = 24800
Step 249: 24800 + 100 = 24900
Step 250: 24900 + 100 = 25000
Step 251: 25000 + 100 = 25100
Step 252: 25100 + 100 = 25200
Step 253: 25200 + 100 = 25300
Step 254: 25300 + 100 = 25400
Step 255: 25400 + 100 = 25500
Step 256: 25500 + 100 = 25600
Step 257: 25600 + 100 = 25700
Step 258: 25700 + 100 = 25800
Step 259: 25800 + 100 = 25900
Step 260: 25900 + 100 = 26000
Step 261: 26000 + 100 = 26100
Step 262: 26100 + 100 = 26200
Step 263: 26200 + 100 = 26300
Step 264: 26300 + 100 = 26400
Step 265: 26400 + 100 = 26500
Step 266: 26500 + 100 = 26600
Step 267: 26600 + 100 = 26700
Step 268: 26700 + 100 = 26800
Step 269: 26800 + 100 = 26900
Step 270: 26900 + 100 = 27000
Step 271: 27000 + 100 = 27100
Step 272: 27100 + 100 = 27200
Step 273: 27200 + 100 = 27300
Step 274: 27300 + 100 = 27400
Step 275: 27400 + 100 = 27500
Step 276: 27500 + 100 = 27600
Step 277: 27600 + 100 = 27700
Step 278: 27700 + 100 = 27800
Step 279: 27800 + 100 = 27900
Step 280: 27900 + 100 = 28000
Step 281: 28000 + 100 = 28100
Step 282: 28100 + 100 = 28200
Step 283: 28200 + 100 = 28300
Step 284: 28300 + 100 = 28400
Step 285: 28400 + 100 = 28500
Step 286: 28500 + 100 = 28600
Step 287: 28600 + 100 = 28700
Step 288: 28700 + 100 = 28800
Step 289: 28800 + 100 = 28900
Step 290: 28900 + 100 = 29000
Step 291: 29000 + 100 = 29100
Step 292: 29100 + 100 = 29200
Step 293: 29200 + 100 = 29300
Step 294: 29300 + 100 = 29400
Step 295: 29400 + 100 = 29500
Step 296: 29500 + 100 = 29600
Step 297: 29600 + 100 = 29700
Step 298: 29700 + 100 = 29800
Step 299: 29800 + 100 = 29900
Step 300: 29900 + 100 = 30000
Step 301: 30000 + 100 = 30100
Step 302: 30100 + 100 = 30200
Step 303: 30200 + 100 = 30300
Step 304: 30300 + 100 = 30400
Step 305: 30400 + 100 = 30500
Step 306: 30500 + 100 = 30600
Step 307: 30600 + 100 = 30700
Step 308: 30700 + 100 = 30800
Step 309: 30800 + 100 = 30900
Step 310: 30900 + 100 = 31000
Step 311: 31000 + 100 = 31100
Step 312: 31100 + 100 = 31200
Step 313: 31200 + 100 = 31300
Step 314: 31300 + 100 = 31400
Step 315: 31400 + 100 = 31500
Step 316: 31500 + 100 = 31600
Step 317: 31600 + 100 = 31700
Step 318: 31700 + 100 = 31800
Step 319: 31800 + 100 = 31900
Step 320: 31900 + 100 = 32000
Step 321: 32000 + 100 = 32100
Step 322: 32100 + 100 = 32200
Step 323: 32200 + 100 = 32300
Step 324: 32300 + 100 = 32400
Step 325: 32400 + 100 = 32500
Step 326: 32500 + 100 = 32600
Step 327: 32600 + 100 = 32700
Step 328: 32700 + 100 = 32800
Step 329: 32800 + 100 = 32900
Step 330: 32900 + 100 = 33000
Step 331: 33000 + 100 = 33100
Step 332: 33100 + 100 = 33200
Step 333: 33200 + 100 = 33300
Step 334: 33300 + 100 = 33400
Step 335: 33400 + 100 = 33500
Step 336: 33500 + 100 = 33600
Step 337: 33600 + 100 = 33700
Step 338: 33700 + 100 = 33800
Step 339: 33800 + 100 = 33900
Step 340: 33900 + 100 = 34000
Step 341: 34000 + 100 = 34100
Step 342: 34100 + 100 = 34200
Step 343: 34200 + 100 = 34300
Step 344: 34300 + 100 = 34400
Step 345: 34400 + 100 = 34500
Step 346: 34500 + 100 = 34600
Step 347: 34600 + 100 = 34700
Step 348: 34700 + 100 = 34800
Step 349: 34800 + 100 = 34900
Step 350: 34900 + 100 = 35000
Step 351: 35000 + 100 = 35100
Step 352: 35100 + 100 = 35200
Step 353: 35200 + 100 = 35300
Step 354: 35300 + 100 = 35400
Step 355: 35400 + 100 = 35500
Step 356: 35500 + 100 = 35600
Step 357: 35600 + 100 = 35700
Step 358: 35700 + 100 = 35800
Step 359: 35800 + 100 = 35900
Step 360: 35900 + 100 = 36000
Step 361: 36000 + 100 = 36100
Step 362: 36100 + 100 = 36200
Step 363: 36200 + 100 = 36300
Step 364: 36300 + 100 = 36400
Step 365: 36400 + 100 = 36500
Step 366: 36500 + 100 = 36600
Step 367: 36600 + 100 = 36700
Step 368: 36700 + 100 = 36800
Step 369: 36800 + 100 = 36900
Step 370: 36900 + 100 = 37000
Step 371: 37000 + 100 = 37100
Step 372: 37100 + 100 = 37200
Step 373: 37200 + 100 = 37300
Step 374: 37300 + 100 = 37400
Step 375: 37400 + 100 = 37500
Step 376: 37500 + 100 = 37600
Step 377: 37600 + 100 = 37700
Step 378: 37700 + 100 = 37800
Step 379: 37800 + 100 = 37900
Step 380: 37900 + 100 = 38000
Step 381: 38000 + 100 = 38100
Step 382: 38100 + 100 = 38200
Step 383: 38200 + 100 = 38300
Step 384: 38300 + 100 = 38400
Step 385: 38400 + 100 = 38500
Step 386: 38500 + 100 = 38600
Step 387: 38600 + 100 = 38700
Step 388: 38700 + 100 = 38800
Step 389: 38800 + 100 = 38900
Step 390: 38900 + 100 = 39000
Step 391: 39000 + 100 = 39100
Step 392: 39100 + 100 = 39200
Step 393: 39200 + 100 = 39300
Step 394: 39300 + 100 = 39400
Step 395: 39400 + 100 = 39500
Step 396: 39500 + 100 = 39600
Step 397: 39600 + 100 = 39700
Step 398: 39700 + 100 = 39800
Step 399: 39800 + 100 = 39900
Step 400: 39900 + 100 = 40000
Step 401: 40000 + 100 = 40100
Step 402: 40100 + 100 = 40200
Step 403: 40200 + 100 = 40300
Step 404: 40300 + 100 = 40400
Step 405: 40400 + 100 = 40500
Step 406: 40500 + 100 = 40600
Step 407: 40600 + 100 = 40700
Step 408: 40700 + 100 = 40800
Step 409: 40800 + 100 = 40900
Step 410: 40900 + 100 = 41000
Step 411: 41000 + 100 = 41100
Step 412: 41100 + 100 = 41200
Step 413: 41200 + 100 = 41300
Step 414: 41300 + 100 = 41400
Step 415: 41400 + 100 = 41500
Step 416: 41500 + 100 = 41600
Step 417: 41600 + 100 = 41700
Step 418: 41700 + 100 = 41800
Step 419: 41800 + 100 = 41900
Step 420: 41900 + 100 = 42000
Step 421: 42000 + 100 = 42100
Step 422: 42100 + 100 = 42200
Step 423: 42200 + 100 = 42300
Step 424: 42300 + 100 = 42400
Step 425: 42400 + 100 = 42500
Step 426: 42500 + 100 = 42600
Step 427: 42600 + 100 = 42700
Step 428: 42700 + 100 = 42800
Step 429: 42800 + 100 = 42900
Step 430: 42900 + 100 = 43000
Step 431: 43000 + 100 = 43100
Step 432: 43100 + 100 = 43200
Step 433: 43200 + 100 = 43300
Step 434: 43300 + 100 = 43400
Step 435: 43400 + 100 = 43500
Step 436: 43500 + 100 = 43600
Step 437: 43600 + 100 = 43700
Step 438: 43700 + 100 = 43800
Step 439: 43800 + 100 = 43900
Step 440: 43900 + 100 = 44000
Step 441: 44000 + 100 = 44100
Step 442: 44100 + 100 = 44200
Step 443: 44200 + 100 = 44300
Step 444: 44300 + 100 = 44400
Step 445: 44400 + 100 = 44500
Step 446: 44500 + 100 = 44600
Step 447: 44600 + 100 = 44700
Step 448: 44700 + 100 = 44800
Step 449: 44800 + 100 = 44900
Step 450: 44900 + 100 = 45000
Step 451: 45000 + 100 = 45100
Step 452: 45100 + 100 = 45200
Step 453: 45200 + 100 = 45300
Step 454: 45300 + 100 = 45400
Step 455: 45400 + 100 = 45500
Step 456: 45500 + 100 = 45600
Step 457: 45600 + 100 = 45700
Step 458: 45700 + 100 = 45800
Step 459: 45800 + 100 = 45900
Step 460: 45900 + 100 = 46000
Step 461: 46000 + 100 = 46100
Step 462: 46100 + 100 = 46200
Step 463: 46200 + 100 = 46300
Step 464: 46300 + 100 = 46400
Step 465: 46400 + 100 = 46500
Step 466: 46500 + 100 = 46600
Step 467: 46600 + 100 = 46700
Step 468: 46700 + 100 = 46800
Step 469: 46800 + 100 = 46900
Step 470: 46900 + 100 = 47000
Step 471: 47000 + 100 = 47100
Step 472: 47100 + 100 = 47200
Step 473: 47200 + 100 = 47300
Step 474: 47300 + 100 = 47400
Step 475: 47400 + 100 = 47500
Step 476: 47500 + 100 = 47600
Step 477: 47600 + 100 = 47700
Step 478: 47700 + 100 = 47800
Step 479: 47800 + 100 = 47900
Step 480: 47900 + 100 = 48000
Step 481: 48000 + 100 = 48100
Step 482: 48100 + 100 = 48200
Step 483: 48200 + 100 = 48300
Step 484: 48300 + 100 = 48400
Step 485: 48400 + 100 = 48500
Step 486: 48500 + 100 = 48600
Step 487: 48600 + 100 = 48700
Step 488: 48700 + 100 = 48800
Step 489: 48800 + 100 = 48900
Step 490: 48900 + 100 = 49000
Step 491: 49000 + 100 = 49100
Step 492: 49100 + 100 = 49200
Step 493: 49200 + 100 = 49300
Step 494: 49300 + 100 = 49400
Step 495: 49400 + 100 = 49500
Step 496: 49500 + 100 = 49600
Step 497: 49600 + 100 = 49700
Step 498: 49700 + 100 = 49800
Step 499: 49800 + 100 = 49900

So, 100*499 = 49900